Origin of Prokaryotic and Eukaryotas. Fossil records indicate that Eukaryotas evolved from prokaryotic somewhere between 1.5 to 2 billion years ago<span>. Two proposed pathways describe the invasion of prokaryotic cells by two smaller prokaryotic cells.</span>
<h3><u>Answer;</u></h3>
is a mixture of rock fragments, living organisms, and humus
<h3><u>Explanation;</u></h3>
- Topsoil refers to the top layer of soil that is high in organic matter and nutrients, formed by the slow weathering of rocks and decaying organic matter over thousands of years.
- Topsoil is made up of organic matter, microbes, water and insects that are all needed to ensure cycling.
- Topsoil is used as the medium for all plant growth, whether it is a lawn, garden or prairie.
Answer:
Option C, No. The energy contained within these macromolecules is converted into other forms of chemical energy and kinetic energy, though some is lost as heat.
Explanation:
Breaking down of large molecules in to smaller molecules does not signify breaking down of energy stored in it and hence losing all the stored energy.
Breaking down of large molecule is necessary to convert large molecules into small easily digestible molecules so that the food energy stored in them can be stored in some other form specifically chemical energy and can be used at later stages. However, in the process of conversion of large molecules into small molecules , a certain amount of heat energy is used.
Hence, option C is correct
Answer:
Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.Body structures can change according to the actions of the organism.have an innate tendency toward complexity and perfection. The actions of organisms as they use or fail to use body structures.
